This Isn't the Anime World I Know

Why is it that everyone else transmigrates into a world of anime one series at a time, but I end up in a massive crossover, a world packed with more powerhouses than you can shake a stick at?

Uchiha Madara: "There are so few places to conquer in this world, barely enough to keep me occupied."

Blackbeard Teach: "Exactly. This is going to be my era."

Aizen Sosuke: "The betrayal you can see isn't frightening. The truly frightening betrayal is the one you can't see."

Zeref: "If this world cannot accept me, then I will destroy it!"

Gilgamesh: "The king shall acknowledge it, the king shall permit it, and the king shall bear the entire world."

Thanos: "How can you get into heaven without dying?"

Mo Han: "Huh? Are these the villainous bosses I remember? Why are they... so weak? This is so boring. Can't we get a few stronger ones? What's-her-name, Kaguya, Imu, Yhwach, and all the others... Come at me together. Yeah..."

This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.